Air Hygiene
1. What kind of humidity can be measured by a psychrometer?
Absolute humidity
Relative humidity
Maximum humidity
All types of humidity
2. What devices are needed to measure low air velocity?
Catheter
Catatermometer
Hygrometer
Anemometer
3. What is Climate?
Aggregate of meteorological phenomena
Regular sequence of meteorological processes
Regular yearly weather patterns
Long-term weather regime
4. What physical parameters of air do you know?
Air velocity
pH
Methane
Ozone
5. What parameters does the microclimate include?
Air humidity
Weather
Air
Water
6. The optimum relative humidity in buildings is ranged between:
30-40%
30-60%
50-60%
60-70%
7. With increase in altitude, atmospheric pressure:
Increases
Decreases
Remains unchanged
Starts fluctuating
8. In what combination of microclimatic parameters the human body will become too cold?
high temperature and high atmospheric pressure
high humidity and high atmospheric pressure
low temperature and low humidity
low temperature and high humidity
9. In what combination of microclimatic parameters the human body will become too cold?
high humidity and high atmospheric pressure
low temperature and low humidity
low temperature and high air speed
low temperature and low atmospheric pressure
10. The study of the microclimate of the classroom revealed that air temperature was 24 °C, horizontal temperature gradient - 2.0°C, vertical gradient - 2.5°C, relative humidity - 72%, air velocity - 0.1 m/sec. What microclimate parameters of the classroom does not meet hygiene standards?
air temperature and air speed
air temperature and relative humidity
horizontal gradient of air temperature and relative humidity
vertical temperature gradient and air velocity
11. The mean air temperature in the ward of the adult somatic department is 22 C. Air temperature gradient in vertical - 4 C and horizontal gradient of air temperature is 2 C. Relative humidity is 40% and air velocity - 0,01 m/s. What microclimate parameters in the hospital room does not meet hygiene requirements?
meanairtemperature
vertical gradient of the air temperature
horizontal gradient of the air temperature
relativehumidity
12. Climatic conditions in South India are such when a high temperature is very often combined with high air velocity. How does the increased speed of air movement on the human body at the air temperature above + 35°C?
it is favorable as a result of amplification of sweating
it contributes to the release of excess heat by convection
it contributes to overheating due to the termination of heat release by convection
it enhances heat transfer by conduction
13. The study of the microclimate of the classroom revealed that air temperature was 20 °C, horizontal temperature gradient - 4.0°C, vertical gradient - 2.5°C, relative humidity - 74%, air velocity - 0.1 m/sec. What microclimate parameters of the classroom does not meet hygiene standards?
air temperature and air speed
air temperature and relative humidity
horizontal gradient of air temperature and relative humidity
vertical temperature gradient and air velocity
14. In a classroom, the air volume is regulated per 1 student. What is the minimum volume of space per person with a single exchange of air per hour in ordinary dwellings?
air cube
physiologicalvolume
ventilationvolume
functionalcube
15. Please, indicate the standards of microclimate in living quarters
temperature 16-18oС, relative humidity 30-40%, air velocity 0,5-1 m/s
temperature 23-25oС, air velocity 0.05-0.1 m/s, concentration of carbon dioxide 3%
temperature 18-20oС, relative humidity 40-60%, air velocity 0.2-0.4 m/s
concentration of carbon dioxide 1%, bacterial contamination of 5000 microorganisms in 1m3, temperature 22-24oC, relative humidity 50-70%, air velocity 0.1-0.3 m/s
16. What is optimum temperature in living premises in temperate climate areas?
16-18oC
18-20oC
20-22oC
22-24oC
17. Increased room air temperature adversely affects:
Central nervous system
thermoregulation system
joints mobility
musculoskeletal system
18. Increased room air temperature adversely affects:
the digestive system
hearing and vision
reproductive system
musculoskeletal system
19. Increased room air temperature adversely affects:
joints mobility
hearing and vision
cardiovascular system
musculoskeletal system
20. Increased room air temperature adversely affects:
musculoskeletal system
joints mobility
hearing and vision
water-salt exchange
21. Low air temperature adversely affects:
*peripheral nervous system (in the form of neuritis, myositis)
thermoregulation, reducing heat dissipation
joints mobility
hearing and vision
22. Low air temperature adversely affects:
thermoregulation, reducing heat dissipation
joints mobility
hearing and vision
the immune system
23. What does influence on comfort temperature value in a room is affected by:
latitude
climatic zone
oxygen level in the air
the degree of body hardening
24. Normative values of air temperature in the room depend on the climatic zone because:
humans belong to homoiothermic biological species
there are different altitudes above sea level
relative air humidity affects heat exchange
radiative heat losses prevail others
25. The thermal comfort of a person in a room depends on:
nature of the work
light level
the degree of body hardening
oxygen level in the air
26. The thermal comfort of a person in a room depends on:
oxygen level in the air
light level
the degree of body hardening
efficiency of heating
27. What way of heat exchange is predominant in humans in conditions of thermal comfort?
conduction
convection
radiation
perspiration
28. Select correct measure of prevention of a body overheat:
increasing fat in a diet
increasing protein in a diet
rational mode of work and rest
excessive muscular activity
29. The indicator of relative humidity has physiological significance, but not absolute humidity, because:
relative humidity affects heat exchange, and absolute one does not
absolute humidity is not an objective indicator
relative humidity shows the percentage of air saturation with water vapor
barometric pressure does not affect the absolute, but changes the relative humidity
30. Microclimate conditions under which the body is overcooled more quickly:
high humidity and low temperature
high humidity and high temperature
low humidity and high temperature
low temperature and low humidity
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